Natural Radioactivity in Marine Sediment Cores from the Shallow-Sea Hydrothermal System off Milos Island, Greece - I. Kotopoulou; Theo J. Mertzimekis; Godelitsas, A.; R. Price; D.A. Fike; J.P. Amend; W.P. Gillhooly III; G.K. Druschel (2015)